Home / 1,243,625.20-1,866,820.20-770,844.40

Finding the Fourth Proportional to 1,243,625.20, 1,866,820.20 and 770,844.40

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Solution

The fourth proportional to 1,243,625.20, 1,866,820.20 and 770,844.40 is: 1,157,123.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,625.20 : 1,866,820.20 = 770,844.40 : x
  2. Step 2: Convert to fraction form
    1,243,625.20/1,866,820.20 = 770,844.40/x
  3. Step 3: Cross multiply
    1,243,625.20x = 1,866,820.20 × 770,844.40
  4. Step 4: Simplify right side
    1,243,625.20x = 1,439,027,896,976.88
  5. Step 5: Solve for x
    x = 1,439,027,896,976.88/1,243,625.20
  6. Step 6: Final answer
    x = 1,157,123.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.